Storage and mixing system for pasty cement components and method therefor

US10463413B2 · kind B2 · utility

Assignee

• Heraeus Medical GmbH · DE

Inventors

• Sebastian Vogt · Jena, DE
• Thomas Kluge · Vallendar, DE

Key dates

• Filing date: Mar 16, 2017
• Grant date: Nov 5, 2019
• Expiry date: Jan 24, 2038

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B05C17/0106
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Storage and mixing systems for pasty two-component polymethyl methacrylate bone cements comprise a tubular cartridge having a cylindrical inner chamber, a cartridge head, which closes one end of the tubular cartridge at the front side, a partition that is disposed axially in the cylindrical inner chamber of the cartridge. The partition divides the cylindrical inner chamber of the cartridge bounded by the cartridge head into two cavities that are spatially separated from one another, wherein a first pasty cement component is present in the first cavity and a second pasty cement component is present in the separate second cavity. The systems further comprising two dispensing plungers axially displaceable in the two cavities of the cartridge, wherein the dispensing plungers close the two cavities on the back side of the cavities situated opposite the cartridge head, a bending device for deforming the partition, wherein the bending device is axially movable in the cartridge and is disposed, or is to be disposed, behind the dispensing plungers, as seen from the cartridge head, wherein the bending device has a deflection surface that is inclined with respect to the axis of the cartridge …